Forum Thread

APC Battery Backup makes loud high pitched noise all of a sudden

RUsum1 9,544 1,696 March 2, 2013 at 01:07 PM
This has happened multiple times. I'm watching TV and all of a sudden the APC unit will make this constant, loud, high-pitched noise. Nothing turns off as if the unit failed or something but the noise is unbearable. I turn off my TV and HTPC and then turn off the APC unit for about a minute, turn it back on, and the noise is gone. It isn't really that frequent but has happened at least three times. What is the issue?

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#2
Battery replacement warning...time to replace the battery



You need two batteries...
http://www.apexbattery.com/apc-ba...gn=froogle

The APC Back-UPS POWERSTACK 450 UPS Battery requires 2 batteries to replace it. The price above includes ONLY 1 of them.The APC Back-UPS POWERSTACK 450 UPS Battery is replaced by this high quality replacement. Double check the actual size of the batteries being replaced. UPS replacement battery packs contain replacement batteries only. You must reuse your existing cabling and hardware. APC model numbers are very similar so check the model number listed here with the barcode label on the back or botto.
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Last edited by boltman2007 March 2, 2013 at 01:29 PM
#3
Quote from boltman2007 View Post :
Battery replacement warning...time to replace the battery
Agreed. Look for one by Yuasa or Power Sonic (The APC branded ones are made by whomever APC decides to buy from at any particular time. They may be good, they may not).

Edit: This [ecomelectronics.com]should do nicely. I bought this brand from this company for my 350VA UPS from APC and it has been working great.
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#4
Man these batteries are expensive if I have to purchase two. They cost just as much as the unit it seems. Is there a way to bypass the battery and use this unit as just a surge protector somewhere else in the house and get a new UPS to use where this worn out one is?

edit: how long are the warranties? I have to check my records but I think I've had this thing less than two years. That seems kind of quick for the battery to die. Is there a right way and a wrong way to initially charge the battery?
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Last edited by RUsum1 March 2, 2013 at 01:41 PM
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#5
Quote from RUsum1 View Post :
Man these batteries are expensive if I have to purchase two. They cost just as much as the unit it seems. Is there a way to bypass the battery and use this unit as just a surge protector somewhere else in the house and get a new UPS to use where this worn out one is?

edit: how long are the warranties? I have to check my records but I think I've had this thing less than two years. That seems kind of quick for the battery to die. Is there a right way and a wrong way to initially charge the battery?
batteries are usually guaranteed for 3 years. the thing is they are going to want you to ship the failed batteries back on your dime or/and pay to ship the new ones. better to just buy replacements or a whole new unit. either way is not cheap.

i pay $17-18 for 7.5Ah APC batteries from ebay - not cheap, but that includes shipping.
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Last edited by ReverseHandedJO March 2, 2013 at 02:23 PM
#6
Quote from RUsum1 View Post :
Man these batteries are expensive if I have to purchase two. They cost just as much as the unit it seems. Is there a way to bypass the battery and use this unit as just a surge protector somewhere else in the house and get a new UPS to use where this worn out one is?

edit: how long are the warranties? I have to check my records but I think I've had this thing less than two years. That seems kind of quick for the battery to die. Is there a right way and a wrong way to initially charge the battery?
I don't think you can get a decent 450VA UPS for even close to $15.
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#7
Quote from hbarnwheeler View Post :
I don't think you can get a decent 450VA UPS for even close to $15.
He needs 2 so more like $30
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#8
Quote from boltman2007 View Post :
He needs 2 so more like $30
Maybe I'm misunderstanding. If he needs 2 UPS devices (as opposed to 1 UPS and 1 surge protector) then the relative price difference between batteries and new devices remains the same.,
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#9
Quote from hbarnwheeler View Post :
Maybe I'm misunderstanding. If he needs 2 UPS devices (as opposed to 1 UPS and 1 surge protector) then the relative price difference between batteries and new devices remains the same.,
He needs two batteries for that UPS
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#10
What the heck is an APC?
Is that a brand or something?
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#11
Quote from RUsum1 View Post :
This has happened multiple times. I'm watching TV and all of a sudden the APC unit will make this constant, loud, high-pitched noise. Nothing turns off as if the unit failed or something but the noise is unbearable. I turn off my TV and HTPC and then turn off the APC unit for about a minute, turn it back on, and the noise is gone. It isn't really that frequent but has happened at least three times. What is the issue?
What lights do you have on the APC at the time of the noise?
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#12
Quote from boltman2007 View Post :
He needs two batteries for that UPS
The BE450G only uses one battery.
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#13
Quote from RockySosua View Post :
What the heck is an APC?
Is that a brand or something?
APC is a brand of UPS.
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#14
450va is not enough for a TV and htpc
I would replace it with a bigger va ups
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#15
Quote from hbarnwheeler View Post :
Maybe I'm misunderstanding. If he needs 2 UPS devices (as opposed to 1 UPS and 1 surge protector) then the relative price difference between batteries and new devices remains the same.,
I was going by this person's quote saying I needed two batteries for my one unit.
Quote from boltman2007 View Post :
You need two batteries...
http://www.apexbattery.com/apc-ba...gn=froogle

The APC Back-UPS POWERSTACK 450 UPS Battery requires 2 batteries to replace it. The price above includes ONLY 1 of them.The APC Back-UPS POWERSTACK 450 UPS Battery is replaced by this high quality replacement. Double check the actual size of the batteries being replaced. UPS replacement battery packs contain replacement batteries only. You must reuse your existing cabling and hardware. APC model numbers are very similar so check the model number listed here with the barcode label on the back or botto.
Quote from menace33 View Post :
What lights do you have on the APC at the time of the noise?
the green power light will blink between green and red when the noise happens.
Quote from silenze View Post :
450va is not enough for a TV and htpc
I would replace it with a bigger va ups
Well I bought it when I had a relatively small TV (only a 32" LED) so I didn't require a bigger one. Currently I have a 59" TV so it isn't the greatest. It won't sustain power but I just wanted enough juice to turn off my computer safely. The unit gives me over a minute of use I think (I've only had the power go off on my once I think). But if I buy a new unit I will go a little bigger.
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